Royal Society of Chemistry

A lipophilic "fully-anti" dodecamer from a (5[prime or minute]S)-5[prime or minute],8-cyclo-2[prime or minute]-deoxyguanosine

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10722-10725
DOI: 10.1039/C4CC04275A, CommunicationSilvia Pieraccini, Michael A. Terzidis, Enrico J. Baldassarri, Giovanna Fragneto, Paolo Mariani, Stefano Masiero, Chryssostomos Chatgilialoglu
The self-assembly of a lipophilic derivative of mutagenic (5[prime or minute]S)-5[prime or minute],8-cyclo-2[prime or minute]-deoxyguanosine has been investigated by CD, NMR and SANS. The derivative forms a dodecameric G-quadruplex composed of three stacked fully-anti G-quartets.
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Sterically hindered malonamide monomers for the step growth synthesis of polyesters and polyamides

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10665-10668
DOI: 10.1039/C4CC03344B, CommunicationS. N. G. Tyler, R. L. Webster
Exploiting the ready cleavage of bulky amides in the presence of a simple nucleophile, a new monomer for step growth polymerisation has been realised. A range of novel polyesters and polyamides have been prepared under mild conditions that allow for efficient recycling and reuse of the amine by-product. The use of a Lewis acid to increase polyester molecular weight is also explored.
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An electron transfer series of octahedral chromium complexes containing a redox non-innocent [small alpha]-diimine ligand

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10626-10629
DOI: 10.1039/C4CC03332A, CommunicationJingmei Shen, Glenn P. A. Yap, William E. Barker IV, William E. Geiger, Klaus H. Theopold
An electron-transfer series of octahedral [small alpha]-diimine complexes [(HLCy)3Cr]n+(BARF)n (n = 2, 1, 0) has been synthesized and crystallographically characterized.
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Cyclopropanation of styrenes and stilbenes using lithiomethyl trimethylammonium triflate as methylene donor

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10608-10610
DOI: 10.1039/C4CC04929B, CommunicationJuan M. Sarria Toro, Tim den Hartog, Peter Chen
Soluble lithiomethyl trimethylammonium triflate can cyclopropanate styrenes and stilbenes efficiently. Kinetic experiments support a carbolithiation-ring closure mechanism.
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Pd-Catalyzed [3+2] cycloaddition of ketoimines with alkynes via directed sp3 C-H bond activation

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10699-10702
DOI: 10.1039/C4CC04676E, CommunicationYing Xie, Tengfei Chen, Shaomin Fu, Xing-Shu Li, Yuanfu Deng, Huanfeng Jiang, Wei Zeng
The palladium-catalyzed oxidative [3+2] cycloaddition of ketoimines with alkynes provided an efficient access to multisubstituted pyrroles via Csp3-H activation.
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Room-temperature palladium-catalyzed direct 2-arylation of benzoxazoles with aryl and heteroaryl bromides

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10661-10664
DOI: 10.1039/C4CC05307A, CommunicationFeng Gao, Byeong-Seon Kim, Patrick J. Walsh
The first room-temperature direct 2-arylation of benzoxazoles with aryl bromides by a Pd(OAc)2/NiXantphos-based catalyst is reported.
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Dehydromethylation of alkali metal salts of the utility amide 2,2,6,6-tetramethylpiperidide (TMP)

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10588-10591
DOI: 10.1039/C4CC04959D, CommunicationAlan R. Kennedy, Sarah M. Leenhouts, John J. Liggat, Antonio J. Martinez-Martinez, Kimberley Miller, Robert E. Mulvey, Charles T. O'Hara, Philip O'Keefe, Alan Steven
Heating alkali metal TMP compounds to reflux in hydrocarbon solution releases methane to generate novel aza-allyl derivatives.
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A highly sensitive surface plasmon resonance sensor for the detection of DNA and cancer cells by a target-triggered multiple signal amplification strategy

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10718-10721
DOI: 10.1039/C4CC04776A, CommunicationPeng He, Wenping Qiao, Lijun Liu, Shusheng Zhang
A SPR bioassay was developed for the detection of DNA and Ramos cells by combining the target-triggered isothermal exponential amplification with MNP-based RCA.
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Highly sensitive methyltransferase activity assay and inhibitor screening based on fluorescence quenching of graphene oxide integrated with the site-specific cleavage of restriction endonuclease

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10691-10694
DOI: 10.1039/C4CC04428B, CommunicationLijuan Ji, Zhewei Cai, Yingdan Qian, Ping Wu, Hui Zhang, Chenxin Cai
A sensitive and selective approach for the DNA methyltransferase activity assay and MTase inhibitor screening is reported.
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Photo-induced glycosylation using reusable organophotoacids

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10695-10698
DOI: 10.1039/C4CC04753B, CommunicationRyosuke Iwata, Kanjiro Uda, Daisuke Takahashi, Kazunobu Toshima
The glycosylation reactions of glycosyl trichloroacetimidates and several alcohols using an organophotoacid as an activator under photoirradiation proceeded smoothly to give the corresponding glycosides in high yields.
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Amorphous vanadium oxide coating on graphene by atomic layer deposition for stable high energy lithium ion anodes

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10703-10706
DOI: 10.1039/C4CC04580G, CommunicationXiang Sun, Changgong Zhou, Ming Xie, Tao Hu, Hongtao Sun, Guoqing Xin, Gongkai Wang, Steven M. George, Jie Lian
Amorphous V2O5 coating by atomic layer deposition on graphene displays a high rate and superior cyclic performance as a lithium ion battery anode. No mechanical degradation and dissolution of vanadium occur upon cycling.
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The Au clusters induce tumor cell apoptosis via specifically targeting thioredoxin reductase 1 (TrxR1) and suppressing its activity

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10687-10690
DOI: 10.1039/C4CC03320E, CommunicationRu Liu, Yaling Wang, Qing Yuan, Deyi An, Jingyuan Li, Xueyun Gao
The Au clusters stabilized by tridecapeptides can significantly suppress the TrxR1 activity in the cytoplasm and induce cell apoptosis.
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Ion-based assemblies of planar anion complexes and cationic PtII complexes

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10615-10618
DOI: 10.1039/C4CC04565C, CommunicationRyo Sekiya, Yusuke Tsutsui, Wookjin Choi, Tsuneaki Sakurai, Shu Seki, Yuya Bando, Hiromitsu Maeda
Because the metallophilicity of attractive PtIIPtII interactions helps in the fabrication of columnar structures, terpyridine-PtII complexes were used as planar counter cationic species for formation of charge-segregated assemblies using [small pi]-conjugated receptor-Cl- complexes as planar anions.
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A triply-responsive pillar[6]arene-based supramolecular amphiphile for tunable formation of vesicles and controlled release

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10658-10660
DOI: 10.1039/C4CC05031B, CommunicationQizhong Zhou, Huajiang Jiang, Rener Chen, Fangli Qiu, Guoliang Dai, Deman Han
A pillar[6]arene-based multi-responsive supramolecular amphiphile was constructed in water. The morphology of the self-assemblies formed by the supramolecular amphiphile exhibited pH-, photo- and enzyme- responsive transitions.
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The simplest method for fabrication of high refractive index polymer-metal oxide hybrids based on a soap-free process

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10611-10614
DOI: 10.1039/C4CC04471A, CommunicationHirokuni Jintoku, Hirotaka Ihara
We established a new strategy for fabricating high refractive index materials by using the tungsten heteropoly acid.
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Tuneable Fmoc-Phe-(4-X)-Phe-NH2 nanostructures by variable electronic substitution

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10630-10633
DOI: 10.1039/C4CC04926H, CommunicationCharalampos G. Pappas, Yousef M. Abul-Haija, Angela Flack, Pim W. J. M. Frederix, Rein V. Ulijn
We show enzymatic introduction of non-natural amino acids with different electronic substituents with a dramatic influence on morphology in self-assembled nanostructures.
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Copper-mediated C-H(sp2)/C-H(sp3) coupling of benzoic acid derivatives with ethyl cyanoacetate: an expedient route to an isoquinolinone scaffold

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10634-10636
DOI: 10.1039/C4CC03837A, CommunicationWei Zhu, Dengyou Zhang, Nan Yang, Hong Liu
An expedient, copper-mediated, direct C-H(sp2)/C-H(sp3) bond coupling of benzoic acid derivatives with ethyl cyanoacetate is disclosed.
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Stop rotating! One substitution halts the B19- motor

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10680-10682
DOI: 10.1039/C4CC03698K, CommunicationFrancisco Cervantes-Navarro, Gerardo Martinez-Guajardo, Edison Osorio, Diego Moreno, William Tiznado, Rafael Islas, Kelling J. Donald, Gabriel Merino
The B19- anion and other boron species have been dubbed 'Wankel motors' for the almost barrierless rotation of inner and outer concentric rings relative to each other in these compounds.
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Reversible sodium storage via conversion reaction of a MoS2-C composite

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10730-10733
DOI: 10.1039/C4CC00294F, CommunicationYun-Xiao Wang, Kuok Hau Seng, Shu-Lei Chou, Jia-Zhao Wang, Zaiping Guo, David Wexler, Hua-Kun Liu, Shi-Xue Dou
The exfoliated MoS2-C composite was tested as a novel anode material for sodium ion batteries with high capacity and prolonged cycling life. Its unique structure and the optimized electrolyte effectively promote Na-storage performance.
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Highly double selective nitration of nitrostilbenes over zeolite

Chem. Commun. - 17 August, 2014 - 20:54

Chem. Commun., 2014, 50,10710-10713
DOI: 10.1039/C4CC04688A, CommunicationJun-Hui Xu, Jian-Ping Wei, Zheng Hao, Qing-Guo Ma, Xin-Hua Peng
A feasible zeolite-assisted ortho C-H nitration of nitrostilbenes has been developed for the first time.
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